OG12-4的有关问题

liujian12

Of all the vast tides of migration that have swept through history, perhaps none was more concentrated than the wave that brought 12 million immigrants onto American shores in little more than three decades.

这句话如何翻译?为什么前面用Of,OF 是什么词性？

liujian12

liujian12

focus2009

Of all the vast tides of migration that have swept through history, perhaps none was more concentrated than the wave that brought 12 million immigrants onto American shores in little more than three decades.
倒装，
纵观历史上所有重大的移民潮，大概没有一个比在more than three decades移了12million移民的那一次（移民潮）更集中（短期，量多移民）

yuyue0277

正常的语序应该是怎么样的呢？